Chaotic Neoclassical Transport at Azimuthally Perturbed or Wave-Mingled Separatrix

A. A. Kabantsev; D. H. E. Dubin; Yu. A. Tsidulko; C. F. Driscoll

doi:dx.doi.org/10.13182/FST11-A11595

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Home / Publications / Journals / Fusion Science and Technology / Volume 59 / Number 1T

Chaotic Neoclassical Transport at Azimuthally Perturbed or Wave-Mingled Separatrix

A. A. Kabantsev, D. H. E. Dubin, Yu. A. Tsidulko, C. F. Driscoll

Fusion Science and Technology / Volume 59 / Number 1T / January 2011 / Pages 150-153

dx.doi.org/10.13182/FST11-A11595

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Variations in magnetic or electrostatic confinement fields give rise to trapping separatrices, and standard neoclassical transport theory analyzes effects from collision-induced separatrix crossings. Experiments and theory have now characterized novel transport effects arising from “chaotic“ separatrix crossings, which occur due to equilibrium plasma rotation across -ruffled separatrices, and/or due to wave-induced separatrix fluctuations.